Embed the collections using mongodb - angularjs

Question

I am just start using mongodb and nodejs. I know that mongodb does not supports joins.I simply insert the data in mongodb and my documents looks:
{
"_id": ObjectId("564dacf84d52785c1d8b4567"),
"content": "This blog created by karanSofat",
"html": "<p>This blog created by karanSofat</p>\n",
}
Now user comments on this post. it should be like this:
{
"_id": ObjectId("564dacf84d52785c1d8b4567"),
"comments": [
{
"name": "sumit",
"email": "sumit#ggi.net",
"comment": "this is also well for me",
"posted_at": ISODate("2015-11-19T11:06:27.172Z")
}
],
"content"▼: "This blog created by karanSofat",
"html": "<p>This blog created by karanSofat</p>\n",
}
Here is my models,
//post model
// grab the mongoose module
var mongoose = require('mongoose');
// define our nerd model
// module.exports allows us to pass this to other files when it is called
module.exports = mongoose.model('post', {
content : {type : String, default: ''},
html : {type : String, default: ''}
});
//comment model
var mongoose = require('mongoos
module.exports = mongoose.model('comment', {
name : {type : String, default: ''},
email : {type : String, default: ''},
comment : {type : String, default: ''},
posted_at : {type : date, default: ''}
});
My Problem is that I don't know on which way I insert comments data using nodejs and my document will embed.
Here is my code:
app.post('/comments/:id', function(req, res) {
var Comment = require("../app/models/comments");//comment Model
var blog = require("../app/models/blog");//blog model
var id = req.params.id; //postId
var comments = JSON.parse(JSON.stringify(req.body)); //commentdata
//code Should be here
res.json({data:id,data2:input});
});
Please help

Answer 1

Karan,
Let's assume you have the following schema:
var Comments = new Schema({
name: String,
email: String,
comment: String,
, posted_at: Date
});
var BlogPost = new Schema({
content : String,
html : String,
comments : [Comments],
});
mongoose.model('BlogPost', BlogPost);
You can add an embed document to an array as such:
// retrieve my model
var BlogPost = mongoose.model('BlogPost');
// create a blog post
var post = new BlogPost();
// create a comment
post.comments.push({
"name": "sumit",
"email": "sumit#ggi.net",
"comment": "this is also well for me",
"posted_at": ISODate("2015-11-19T11:06:27.172Z")
});
post.save(function (err) {
if (!err) console.log('Success!');
});